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Navigation Block: Avoid creating a new array/object on every render #30374

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merged 1 commit into from
Apr 1, 2021

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talldan
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@talldan talldan commented Mar 30, 2021

Description

Same as #30274, the navigation block is also creating new arrays and objects for inner blocks props on every render.

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Checklist:

  • My code is tested.
  • My code follows the WordPress code style.
  • My code follows the accessibility standards.
  • I've tested my changes with keyboard and screen readers.
  • My code has proper inline documentation.
  • I've included developer documentation if appropriate.
  • I've updated all React Native files affected by any refactorings/renamings in this PR (please manually search all *.native.js files for terms that need renaming or removal).

@talldan talldan added [Type] Bug An existing feature does not function as intended [Block] Navigation Affects the Navigation Block labels Mar 30, 2021
@talldan talldan self-assigned this Mar 30, 2021
@talldan talldan requested a review from ajitbohra as a code owner March 30, 2021 09:44
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talldan commented Mar 30, 2021

This PR's not strictly necessary now that #30311 is merged, but it is a very minor optimisation.

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Size Change: -2 B (0%)

Total Size: 1.42 MB

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@talldan talldan added [Type] Task Issues or PRs that have been broken down into an individual action to take and removed [Type] Bug An existing feature does not function as intended labels Mar 30, 2021
@talldan talldan changed the title Navigation Block: Fix crash by avoiding creating a new array/object on every render Navigation Block: Avoid creating a new array/object on every render Mar 30, 2021
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grzim commented Mar 30, 2021

👍 Optimisation + clearer code

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It's is good practice to keep this out of component render functions, but we should assume that block authors are not doing this. I wonder if we should leave it as is to better expose problems? I don't mind either way.

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talldan commented Apr 1, 2021

It's is good practice to keep this out of component render functions, but we should assume that block authors are not doing this. I wonder if we should leave it as is to better expose problems? I don't mind either way.

I was wondering about tests for it. It's easy enough to add a block via a plugin that creates a new array on every render, but not sure how we'd detect the problem, as it doesn't seem like a completely consistent behaviour.

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